Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Deborah Mertlich, Lcsw

Mental Health Counselor in Lake Oswego, OR · enumerated 2021 · authorized official Deborah Mertlich, Owner/ President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1609442029

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Registry record

Entity type Organization (Type 2)

Legal business name Deborah Mertlich, Lcsw

Practice address 4550 Kruse Way Ste 340, Lake Oswego, OR, 97035

Phone (971) 252-1545

Fax (844) 303-5253

Enumeration date May 27, 2021

Last updated in NPPES May 27, 2021

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Deborah Mertlich

Title Owner/ President

Phone (971) 252-1545

Other identifiers

Identifier	Type	State	Issuer
L3405	Other	OR	COMMERCIAL INSURANCE AND SELF PAY

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2021-05-27. Verify at npiregistry.cms.hhs.gov.

Where is Deborah Mertlich, Lcsw located?

The practice location on file with NPPES is in Lake Oswego, OR.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-27.